16W2D cant find heartbeat. UPDATE!!!!!! :)

Going in for an ultrasound on Wednesday to see if its still there but I'm.not very hopeful, doc found hb super fast last time at 13w2d and searched for about 5 minutes this time and nothing. Sorry if this is rambly, upset. UPDATE!!!! My baby is 100% fine and beautiful and wiggly!! Apparently my placenta IS posterior but the baby is basically laying as close to my back as he/she can get which will make it hard to find a heartbeat until it gets bigger and the little arms and legs aren't reaching to my tummy which is why I'm not feeling anything. Told the tech I'm team green and she was awesome about keeping it moving in the AREA so we couldn't get a clear view but my sister and I both think we spied a weenie!! Not that it matters:) Thank you ladies so much for all the positive stories and feedback, thoughts and prayers, and even just your outrage on my behalf for having to wait through the longest 50+ hours I've experienced lately. I can't express how much I looked forward to reading all your words of hope and encouragement. XOXO